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Mysteries of elephant sleep revealed [View all]
Mysteries of elephant sleep revealed
By Helen Briggs
BBC News
9 hours ago
WITS UNIVERSITY
Elephants were studied in Chobe National Park, Botswana
Wild African elephants sleep for the shortest time of any mammal, according to a study.
Scientists tracked two elephants in Botswana to find out more about the animals' natural sleep patterns.
Elephants in zoos sleep for four to six hours a day, but in their natural surroundings the elephants rested for only two hours, mainly at night.
The elephants, both matriarchs of the herd, sometimes stayed awake for several days.
More:
http://www.bbc.com/news/science-environment-39126993
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